Abstract: In a rotary electrical machine, the stator is subject to eddy currents, causing losses. These losses are reduced by extending the path of the eddy currents whilst avoiding causing saturation. The invention therefore proposes to form recessed zones or slots (2) in the teeth (1) of the stator whose depth does not exceed one-half of the height of the tooth (1).

Abstract: The invention relates to a device for gripping and transferring a ring of electrical conductors in the form of pins which are used to produce a winding, such as a pin winding. The gripping device (C) is designed to seize the ring from a first element, such as a ring-forming element, and to transfer same into a second element (B), such as an element used to insert the ring into the member that supports the winding to be produced. The inventive device comprises a control cone (19) which can be moved axially inside a frame (13) for contact with levers (15) which are pivot mounted to the frame, such that the levers pivot when the cone is moved. The winding-production system is characterized in that it comprises an autonomous gripping and transfer device (C) which can be separated from the above-mentioned first and second elements (B) and which can be positioned on same in a pre-determined reference position. The invention can be used to produce a stator for an electrically-rotating machine.

Abstract: The invention relates to an interposed electrical connector which is intended to connect two stacked electronic circuits and to the method of mounting same. The inventive connector (1) comprising plugs (4) which are borne by a base (4), a guide (11) and guide means (12) which are disposed between the guide and the base. According to the invention, at least some of the aforementioned plugs (4) project out from the base (10) such that they can be slid into a housing (13) that passes through the guide (11). The guide means (12) comprise a first projecting part (14) which is solidly connected to the base (10) and a second complementary part (15) which is solidly connected to the guide (11). The base (10) is intended to be fixed to a first circuit while the first part (14) of the guide means (12) is intended to be guided through the second part (15) of the guide means (12) as well as a second circuit (3).

Abstract: The invention relates to a control and power module for an alternator-starter for a motor vehicle, connected between the alternator-starter (3), an on-board wiring network (Ua) and a ground line (GND) of the vehicle, and comprising: a transistor bridge with several branches (B1–B3), and a control unit for comparing a phase voltage (?) of the machine with a reference voltage (Ua, GND) and for controlling the transistors as a function of the result of the comparison, the control unit comprising: a driver (10, 20, 30) for each branch of the transistor bridge, the driver being connected close to the transistors of the branch, and a control circuit for controlling the drivers.

Abstract: The invention relates to a ventilation device for an electrical machine including a rotor (42) provided externally with reliefs (46) delimiting between them cooling channels (46) in which a cooling fluid circulates and a stator. The rotor is equipped with at least one axial fan (48) suitable for directing an airflow into the cooling channels. The invention can be applied to the ventilation device for a motor-vehicle alternator.

Abstract: A brush holder for a vehicle electrical machine having an insulating support, an electrical circuit including a semiconductor control component; and at least one metallic heat dissipation member in contact with the ambient environment and arranged to receive heat from the control component. The dissipation member is composed of two distinct parts, a seat and a dissipator. The seat is fixed to the support and receiving, on one of its faces, the control component and, on the other one of its faces, the dissipator.

Abstract: The invention concerns a current-rectifying arrangement for rotary electrical machines of the type comprising a support (50, 51, 51?) for a plurality of positive diodes (66), a support for a plurality of negative diodes, forming part of the rear bearing of the machine, and a device for cooling by the creation of a forced axial flow of a cooling fluid through the rectifying arrangement, the support for the positive diodes carrying radial cooling fins (60) on its front face oriented towards the axis of the machine; the positive diode support device (66) being produced in the form of at least one moulded piece (50, 51, 51?), whose face oriented towards the aforementioned axis carries fine cooling fins (60). The invention can be used in alternators for motor vehicles.

Abstract: An alternator for a vehicle comprises two pole pieces having interlaced poles (10) and magnets, the poles exhibiting grooves profiled along an axis (21) and accommodating the magnets, the profile completely preventing the magnets escaping from the grooves in a plane perpendicular to the axis (21). It has, for each magnet (20), a strip (24) interposed between one face (25, 27) of the magnet and at least one of the grooves (18), the strip (24) being produced from a material which is less hard than the magnet.

Abstract: Method for control of a multi-phase, reversible, rotating electrical machine, called alternator/starter, for a motor vehicle with a heat engine capable of operating either as an electrical generator—alternator mode—or as an electric motor, especially in order to start the heat engine, characterised in that, during operation in electric-motor mode, the said machine is driven according to two modes corresponding to different speed/torque characteristic curves, namely a first mode, called starter mode, making it possible to drive the heat engine of the vehicle in order to start it with high torques for low speeds, while the second mode, called auxiliary-motor mode, makes it possible to drive at least one power-consumer unit, such as an accessory, and/or the heat engine, at higher speeds and lower torques than those of the first mode.

Abstract: The electric machine includes a collector (60), a brush-holder assembly comprising an end cap (26) and a set of members (28, 30, 32, 34) for electrical connection equipped with guide cages (36, 38, 40, 42) suitable for accommodating a respective brush (44), in which a member (64) for limiting the radial displacement of the brushes in the absence of a collector is provided, the dimensions of the limiting member (64) being suitable for obtaining a tight fit of this member on the end cap (26). Application for the mounting of a brush holder for a motor-vehicle starter.

Abstract: The invention relates to a rotating electric machine, especially an alternator or alternator/starter for motor vehicles, including a stator surrounding a rotor (10) equipped with a pack of metal plates, a gap between the stator and the rotor, permanent magnets integrated into the rotor and excitation coils (14) integrated into the rotor, in which the excitation coils are wound around salient poles (1310) cut out in the pack of metal plates of the rotor, and the permanent magnets are accommodated in housings (13110) formed in the pack of plates of the rotor and open towards the periphery of the rotor, characterized in that the housings (13110) are closed axially at each of their ends by a non-magnetic retaining piece (13) equipped with a part intended to come into abutment with the magnets, and in that the retaining piece features recesses for accommodations [sic] of the buns of the excitation coils (14).

Abstract: An electrical power supply apparatus, especially for a motor vehicle electrical system, comprising at least two power supply sources (1, 2) which are both connected between ground and a supply line, and each of which comprises at least one induced current winding and a bridge of rectifier elements (P1, P2), characterised in that one of the two said sources comprises an auxiliary bridge of rectifier elements of positive type (Paux1), the other one comprising an auxiliary bridge of rectifier elements of negative type (Paux2), with means (I; Dc1, Dc2, Dc3; Id), connected to each of the said two bridges and being adapted to be controlled for the purpose of: in a first state, connecting the two auxiliary bridges (Paux1; Paux2) in series, the rectified voltage supplied to the power supply line then being the sum of the voltages supplied by the induced current winding or windings of each of the two sources and then rectified, in a second state, blocking the connection between the two auxiliary bridges (Paux1; Paux

Abstract: A vehicle alternator comprising a case, a stator winding, and an electrically-insulating element interposed between the case and the winding, the insulating element being a solid body mounted on one of the case and the winding. The insulating element has at least one duct extending through an orifice in the case.

Abstract: Method for controlling the thermal engine of a motor vehicle according to which the said thermal engine is cut off and automatically restarted at the beginning and end of temporary immobilisation periods, according to which the automatic cutting off of the thermal engine is inhibited when the vehicle battery is discharged below a given inhibition threshold, characterised in that the thermal engine is automatically restarted when the vehicle battery is discharged below the said inhibition threshold.

Abstract: The vehicle alternator comprises a rotor (2) having interleaved polar horns (18), at least one of the horns having, facing towards another one of the horns, a side face (20) formed with a profiled groove (22). The groove has one longitudinal end (30) which is blind in a longitudinal direction of the groove.

Abstract: In a device for controlling the power supply of the electric motor of a starter of a motor vehicle, and of an automobile in particular, a power switch is connected in series with the electric motor to control the motor power. The switch consists of an electronic power unit capable of being controlled.

Abstract: The vehicle alternator comprises a rotor having interleaved pole pieces, permanent magnets disposed between the pole pieces, and at least one magnet-support strip which extends over a circumferential outside face of the pole pieces.

Abstract: The invention concerns a vehicle alternator comprising a rotor including a shaft, two plates comprising nested pole horns, magnets extending between the pole horns, and members for maintaining the magnets. The maintaining members extend opposite an external surface of the axial end of the plates.

Abstract: A starter contactor for a heat engine, including a coil, in a bore of which there slides a magnetic core (32) of the type in which an external return spring (58) is in axial abutment against an external flange (56) attached to the core (32), of the type in which an internal bore (36) of the core (32) is open at its rear end (52) so as to define a rear shoulder surface (42) for abutment of an internal return spring (38) for a coupling rod (26) of a lever for actuating an actuator pinion, which rod (26) passes through the rear end (52) of the core (32), and is able to bear on a front base (48) of the bore (36) so as to be displaced by the core (32), characterised in that the front base (48) is integral with the core (36), and in that a capping piece (54) attached to the rear end (52) includes the rear shoulder surface (42) of the bore (36) and the external flange (56).

Abstract: A contactor for a motor vehicle starter, of the type that includes a movable magnetic core which is displaced axially under the effect of a magnetic field produced by a coil, and of the type that includes a fixed magnetic core (26) which extends transversely to a front axial end of the coil, of the type in which the fixed core (26) includes a rear base portion (28) which is received axially in the coil and which has an axial through hole (44) to enable a movable contact finger to pass through, and of the type in which the fixed core (26) includes an annular front disc (30) which is assembled to the rear base portion (26), and which is mounted in a cylindrical seating of the contactor, characterised in that the front disc (30) consists of a stack of laminations (32).